INDUSTRY COMPONENT

Backplane Connector

A high-density electrical connector that provides signal and power distribution between multiple printed circuit boards in industrial input modules.

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Component Specifications

Definition
A backplane connector is a critical interconnect component in modular industrial input systems, designed to establish reliable electrical connections between a main backplane PCB and multiple daughterboard PCBs. It enables simultaneous transmission of digital signals, analog inputs, and power distribution across the input module's architecture. These connectors feature precise pin alignment, robust contact systems, and shielding to maintain signal integrity in industrial environments with electromagnetic interference, vibration, and temperature variations.
Working Principle
The backplane connector operates by providing a passive interconnection matrix between PCBs. When daughterboards (input cards) are inserted into the module chassis, their edge connectors mate with corresponding contacts on the backplane connector. This creates continuous electrical pathways for data signals (using differential pairs for high-speed communication) and power rails. The connector maintains contact pressure through spring-loaded pins or compliant press-fit technology, ensuring reliable connections despite thermal expansion and mechanical stress in industrial settings.
Materials
Housing: High-temperature thermoplastic (PPS, LCP, or PEEK) rated for 125-150°C operation; Contacts: Phosphor bronze or beryllium copper with selective gold plating (0.5-1.27μm) over nickel underplate; Insulators: Glass-filled polymers for dimensional stability; Shielding: Zinc alloy or stainless steel cages with tin plating.
Technical Parameters
  • Pitch 1.27mm or 2.0mm
  • IP Rating IP20 (board-level)
  • Pin Count 40-200 positions
  • Mating Cycles ≥500 cycles
  • Current Rating 1-3A per contact
  • Voltage Rating 250V AC/DC
  • Contact Resistance <20mΩ initial
  • Flammability Rating UL94 V-0
  • Insulation Resistance >1000MΩ at 500VDC
  • Operating Temperature -40°C to +85°C (extended to +125°C available)
  • Dielectric Withstanding Voltage 1000V AC for 1 minute
Standards
IEC 60603-2, IEC 61076-4, MIL-DTL-83513

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Backplane Connector.

industrial backplane connector PCB interconnect input module connector high-density connector industrial automation components Backplane Connector Backplane Connector in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Input Module

A PLC component that receives and converts external sensor/switch signals into digital data for the processor.

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PLC CPU Module

The central processing unit module of a Programmable Logic Controller that executes control programs and manages system operations.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Signal degradation due to contact corrosion
  • Mechanical failure from vibration-induced fretting
  • Intermittent connections from thermal cycling stress
  • Pin damage during improper card insertion
FMEA Triads
Trigger: Contamination from industrial particulates or moisture ingress
Failure: Increased contact resistance leading to signal loss or power interruption
Mitigation: Use connectors with protective shrouds, implement regular cleaning protocols, apply conformal coating to backplane assembly
Trigger: Repeated thermal cycling causing contact spring relaxation
Failure: Loss of contact pressure resulting in intermittent connections
Mitigation: Select connectors with high-temperature rated materials, design for minimal thermal expansion mismatch, use connectors with redundant contact points
Trigger: Mechanical vibration in industrial environments
Failure: Contact fretting wear leading to increased resistance and eventual open circuit
Mitigation: Implement vibration-dampening mounting, use connectors with anti-vibration locking mechanisms, specify connectors validated for industrial vibration profiles

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Contact position tolerance: ±0.1mm; Housing dimensional tolerance: ±0.15mm per IEC 60603-2
Test Method
Electrical: Contact resistance per MIL-STD-1344; Mechanical: Insertion/extraction force per IEC 60512; Environmental: Thermal cycling per IEC 60068-2-14, vibration per IEC 60068-2-6

Buyer Feedback

★★★★☆ 4.6 / 5.0 (26 reviews)

"Standard OEM quality for Computer, Electronic and Optical Product Manufacturing applications. The Backplane Connector arrived with full certification."

"Great transparency on the Backplane Connector components. Essential for our Computer, Electronic and Optical Product Manufacturing supply chain."

"The Backplane Connector we sourced perfectly fits our Computer, Electronic and Optical Product Manufacturing production line requirements."

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Frequently Asked Questions

What is the difference between a backplane connector and a regular board-to-board connector?

Backplane connectors are designed for connecting multiple daughterboards to a single backplane simultaneously, featuring higher pin counts, better alignment guides, and enhanced durability for frequent card insertion/removal. Regular board-to-board connectors typically connect just two PCBs and may have lower cycle life ratings.

How do I select the right backplane connector for my industrial input module?

Consider these factors: required signal count and types (digital/analog/power), operating environment (temperature, vibration, contaminants), mating cycle requirements, compliance with industry standards (IEC, UL), and compatibility with existing module architecture. Consult manufacturer datasheets for environmental ratings and validation test results.

What maintenance do backplane connectors require in industrial applications?

Regular inspection for contamination (clean with approved solvents if needed), verification of contact integrity through periodic electrical testing, and ensuring proper seating of daughterboards. Avoid excessive insertion/removal cycles beyond rated specifications. In harsh environments, consider protective covers when slots are unused.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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